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Author Question: Determine the concavity of f(x) = cos x + sin x on [0, 2] and identify any points of inflection. (Read 120 times)

bb

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on: May 26, 2021
Determine the concavity of  f(x) = cos x + sin x  on [0, 2π] and identify any points of inflection.
◦ concave up on [0, π/4) ∪ (5π/4, 2π], concave down on (π/4, 5π/4); inflection points at x = π/4 and
◦ concave down on [0, 3π/4) ∪ (7π/4, 2π], concave on (3π/4, 7π/4); inflection points at  x = 3π/4 and  
◦ concave up on [0, 3π/4) ∪ (7π/4, 2π], concave down on (3π/4, 7π/4); inflection points at x = 3π/4 and  
◦ concave down on (0, 3π/4) ∪ (7π/4, 2π), concave up on (3π/4, 7π/4); inflection points at  x = 3π/4 and  
◦ concave down on [0, π/4) ∪ (5π/4, 2π], concave up on (π/4, 5π/4); inflection points at x = π/4 and
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Marked as best answer by bb on May 26, 2021

ilianabrrr

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Reply #1 on: May 26, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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bb

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Reply 2 on: May 26, 2021
Great answer, keep it coming :)

alexanderhamilton

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Reply 3 on: Yesterday
Excellent

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